mileage GMC SIERRA 1500 2012 Owners Manual

Black plate (36,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
1-36 In Brief
Resetting the Oil Life System
To reset the Engine Oil Life System
on most vehicles:
1. Display OIL LIFE REMAININGon the DIC. If the vehicle does
not have DIC buttons, the
vehicle must be in P (Park) to
access this display.
2. Press and hold the SET/RESET button on the DIC, or the trip
odometer reset stem if the
vehicle does not have DIC
buttons, for more than
five seconds. The oil life will
change to 100%.
On all vehicles, the Engine Oil Life
System can be reset as follows:
1. Turn the ignition to ON/RUN with the engine off.
2. Fully press the accelerator pedal slowly three times within
five seconds.
3. Display OIL LIFE REMAINING on the DIC. If the display shows
100%, the system is reset. See
Engine Oil Life System on
page 10‑10.
Fuel E85 (85% Ethanol)
Vehicles that have a FlexFuel badge
and a yellow fuel cap can use either
unleaded gasoline or ethanol fuel
containing up to 85% ethanol (E85).
See Fuel E85 (85% Ethanol) on
page 9‑71. For all other vehicles,
use only the unleaded gasoline
described under Recommended
Fuel on page 9‑68.
Driving for Better Fuel
Economy
Driving habits can affect fuel
mileage. Here are some driving
tips to get the best fuel economy
possible.
.Avoid fast starts and accelerate
smoothly.
.Brake gradually and avoid
abrupt stops.
.Avoid idling the engine for long
periods of time.
.When road and weather
conditions are appropriate, use
cruise control.
.Always follow posted speed
limits or drive more slowly when
conditions require.
.Keep vehicle tires properly
inflated.
.Combine several trips into a
single trip.
.Replace the vehicle's tires with
the same TPC Spec number
molded into the tire's sidewall
near the size.
.Follow recommended scheduled
maintenance.
Roadside Assistance
Program
U.S.: 1-888-881-3302
TTY Users (U.S.): 1-888-889-2438
Canada: 1-800-268-6800
Mexico: 01-800-466-0801

Black plate (32,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
5-32 Instruments and Controls
The trip odometer can be reset to
zero by pressing the set/reset
button while the trip odometer is
displayed. You can also reset the
trip odometer while it is displayed by
pressing and holding the trip
odometer reset stem.
The trip odometer has a feature
called the retro-active reset. This
can be used to set the trip odometer
to the number of miles (kilometers)
driven since the ignition was last
turned on. This can be used if the
trip odometer is not reset at the
beginning of the trip.
To use the retro-active reset feature,
press and hold the set/reset button
for at least four seconds. The trip
odometer will display the number of
kilometers (km) or miles driven since
the ignition was last turned on and
the vehicle was moving. Once the
vehicle begins moving, the trip
odometer will accumulate mileage.
For example, if the vehicle was
driven 8 km (5 miles) before it is
started again, and then the
retro-active reset feature isactivated, the display will show 8 km
(5 miles). As the vehicle begins
moving, the display will then
increase to 8.2 km (5.1 miles),
8.4 km (5.2 miles), etc.
Fuel Range
Press the trip/fuel button until FUEL
RANGE displays. This display
shows the approximate number of
remaining kilometers (km) or miles
the vehicle can be driven without
refueling. The display will show
LOW if the fuel level is low.
The fuel range estimate is based on
an average of the vehicle's fuel
economy over recent driving history
and the amount of fuel remaining in
the fuel tank. This estimate will
change if driving conditions change.
For example, if driving in traffic and
making frequent stops, this display
may read one number, but if the
vehicle is driven on a freeway, the
number may change even though
the same amount of fuel is in the
fuel tank. This is because different
driving conditions produce different
fuel economies. Generally, freeway
driving produces better fuel
economy than city driving. Fuel
range cannot be reset.
Average Economy
Press the trip/fuel button until AVG
ECONOMY displays. This display
shows the approximate average
liters per 100 kilometers (L/100 km)
or miles per gallon (mpg). This
number is calculated based on the
number of L/100 km (mpg) recorded
since the last time this menu
item was reset. To reset AVG
ECONOMY, press and hold the set/
reset button.
Fuel Used
Press the trip/fuel button until
FUEL USED displays. This display
shows the number of liters (L) or
gallons (gal) of fuel used since the
last reset of this menu item. To reset
the fuel used information, press and
hold the set/reset button while FUEL
USED is displayed.

Black plate (36,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
5-36 Instruments and Controls
The trip odometer can be reset to
zero by pressing and holding the trip
odometer reset stem while the trip
odometer is displayed.
The trip odometer has a feature
called the retro-active reset. This
can be used to set the trip odometer
to the number of miles (kilometers)
driven since the ignition was last
turned on. This can be used if the
trip odometer is not reset at the
beginning of the trip.
To use the retro-active reset feature,
press and hold the trip odometer
reset stem for at least four seconds.
The trip odometer will display the
number of kilometers (km) or
miles (mi) driven since the ignition
was last turned on and the vehicle
was moving. Once the vehicle
begins moving, the trip odometer
will accumulate mileage. For
example, if the vehicle was driven8 km (5 miles) before it is started
again, and then the retro-active
reset feature is activated, the
display will show 8 km (5 miles).
As the vehicle begins moving, the
display will then increase to 8.2 km
(5.1 miles), 8.4 km (5.2 miles), etc.
Language
This display allows you to select
the language in which the DIC
messages will appear. To select a
language:
1. Press the trip odometer reset
stem until ODOMETER displays.
2. While in the ODOMETER display, press and hold the
trip odometer reset stem for
three seconds until the currently
set language displays. 3. Continue to press and hold the
trip odometer reset stem to scroll
through all of the available
languages.
The available selections
are ENGLISH (default),
FRANCAIS (French),
ESPANOL (Spanish), and
NO CHANGE.
4. Once the desired language is displayed, release the trip
odometer reset stem to set the
choice.
Engine Hours
To display the ENGINE HOURS,
place the ignition in LOCK/OFF or
ACC/ACCESSORY, then press and
hold the trip odometer reset stem
for four seconds while viewing the
ODOMETER. This display shows
the total number of hours the engine
has run.

Black plate (37,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Instruments and Controls 5-37
Trip Odometer Reset Stem
Menu Items (without DIC
Buttons)
Language
This display allows you to select
the language in which the DIC
messages will appear. To select a
language:
1. Press the trip odometer resetstem until ODOMETER displays.
2. While in the ODOMETER display, press and hold the
trip odometer reset stem for
three seconds until the currently
set language displays.
3. Continue to press and hold the trip odometer reset stem to scroll
through all of the available
languages.
The available languages
are ENGLISH (default),
FRANCAIS (French),
ESPANOL (Spanish), and
NO CHANGE. 4. Once the desired language is
displayed, release the trip
odometer reset stem to set the
choice.
Trip Odometer
Press the trip odometer reset stem
until TRIP displays. This display
shows the current distance
traveled in either kilometers (km) or
miles (mi) since the last reset for the
trip odometer.
The trip odometer can be reset to
zero by pressing and holding the trip
odometer reset stem while the trip
odometer is displayed.
The trip odometer has a feature
called the retro-active reset. This
can be used to set the trip odometer
to the number of miles (kilometers)
driven since the ignition was last
turned on. This can be used if the
trip odometer is not reset at the
beginning of the trip. To use the retro-active reset feature,
press and hold the trip odometer
reset stem for at least four seconds.
The trip odometer will display the
number of kilometers (km) or
miles (mi) driven since the ignition
was last turned on and the vehicle
was moving. Once the vehicle
begins moving, the trip odometer
will accumulate mileage. For
example, if the vehicle was driven
8 km (5 miles) before it is started
again, and then the retro-active
reset feature is activated, the
display will show 8 km (5 miles). As
the vehicle begins moving, the
display will then increase to 8.2 km
(5.1 miles), 8.4 km (5.2 miles), etc.
Transmission Temperature
Press the trip odometer reset stem
until TRANS TEMP displays. This
display shows the temperature of
the automatic transmission fluid in
either degrees Celsius (°C) or
degrees Fahrenheit (°F) .

Black plate (4,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
10-4 Vehicle Care
Damage to vehicle components
resulting from modifications or the
installation or use of non‐GM
certified parts, including control
module or software modifications, is
not covered under the terms of the
vehicle warranty and may affect
remaining warranty coverage for
affected parts.
GM Accessories are designed to
complement and function with other
systems on the vehicle. See your
dealer to accessorize the vehicle
using genuine GM Accessories
installed by a dealer technician.
Also, seeAdding Equipment to the
Airbag-Equipped Vehicle on
page 3‑37.Vehicle Checks
Doing Your Own
Service Work
If the vehicle is a hybrid, see the
hybrid supplement for more
information.
{WARNING
It can be dangerous to work on
your vehicle if you do not have
the proper knowledge, service
manual, tools, or parts. Always
follow owner manual procedures
and consult the service manual
for your vehicle before doing any
service work. If doing some of your own service
work, use the proper service
manual. It tells you much more
about how to service the vehicle
than this manual can. To order the
proper service manual, see
Service
Publications Ordering Information
on page 13‑16.
This vehicle has an airbag system.
Before attempting to do your own
service work, see Airbag System
Check on page 3‑38.
Keep a record with all parts receipts
and list the mileage and the date
of any service work performed.
See Maintenance Records on
page 11‑16.

Black plate (10,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
10-10 Vehicle Care
Engine Oil Life System
When to Change Engine Oil
This vehicle has a computer system
that indicates when to change the
engine oil and filter. This is based
on a combination of factors which
include engine revolutions, engine
temperature, and miles driven.
Based on driving conditions, the
mileage at which an oil change is
indicated can vary considerably. For
the oil life system to work properly,
the system must be reset every time
the oil is changed.
On some vehicles, when the system
has calculated that oil life has been
diminished, a CHANGE ENGINE
OIL SOON message comes on
to indicate that an oil change is
necessary. SeeEngine Oil
Messages on page 5‑42. Change
the oil as soon as possible within
the next 1 000 km (600 mi). It is
possible that, if driving under the best conditions, the oil life system
might indicate that an oil change is
not necessary for up to a year.
The engine oil and filter must be
changed at least once a year and,
at this time, the system must be
reset. For vehicles without the
CHANGE ENGINE OIL SOON
message, an oil change is
needed when the OIL LIFE
REMAINING percentage is near
0%. Your dealer has trained service
people who will perform this work
and reset the system. It is also
important to check the oil regularly
over the course of an oil drain
interval and keep it at the proper
level.
If the system is ever reset
accidentally, the oil must be
changed at 5 000 km (3,000 mi)
since the last oil change.
Remember to reset the oil life
system whenever the oil is changed.
How to Reset the Engine Oil
Life System
Reset the system whenever the
engine oil is changed so that the
system can calculate the next
engine oil change. Always reset the
engine oil life to 100% after every oil
change. It will not reset itself. To
reset the system on most vehicles:
1. Display the OIL LIFE
REMAINING on the DIC.
If the vehicle does not have
DIC buttons, the vehicle must
be in P (Park) to access this
display. See Driver Information
Center (DIC) on page 5‑30.
2. Press and hold the SET/RESET button on the DIC, or the trip
odometer reset stem if the
vehicle does not have DIC
buttons, for more than
five seconds. The oil life will
change to 100%.

Black plate (2,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
13-2 Customer Information
STEP TWO:If after contacting a
member of dealership management,
it appears your concern cannot be
resolved by your dealership without
further help, in the U.S., call
1-800-462-8782. In Canada,
call General Motors of Canada
Customer Care Centre at
1-800-263-3777 (English) or
1-800-263-7854 (French).
We encourage you to call the
toll-free number in order to give your
inquiry prompt attention. Have the
following information available to
give the Customer Assistance
representative:
.Vehicle Identification
Number (VIN). This is available
from the vehicle registration or
title, or the plate at the top left of
the instrument panel and visible
through the windshield.
.Dealership name and location.
.Vehicle delivery date and
present mileage. When contacting GMC, remember
that your concern will likely be
resolved at a dealer's facility. That is
why we suggest following Step One
first.
STEP THREE
—U.S. Owners:
Both General Motors and your
dealer are committed to making
sure you are completely satisfied
with the new vehicle. However,
if you continue to remain unsatisfied
after following the procedure
outlined in Steps One and Two, you
can file with the Better Business
Bureau (BBB) Auto Line
®Program
to enforce your rights.
The BBB Auto Line Program is an
out-of-court program administered
by the Council of Better Business
Bureaus to settle automotive
disputes regarding vehicle repairs or
the interpretation of the New Vehicle
Limited Warranty. Although you may
be required to resort to this informal
dispute resolution program prior to
filling out a court action, use of the
program is free of charge and your
case will generally be heard within 40 days. If you do not agree with the
decision given in your case, you
may reject it and proceed with any
other venue for relief available
to you.
You may contact the BBB Auto
Line Program using the toll-free
telephone number or write them at
the following address:
BBB Auto Line Program
Council of Better Business
Bureaus, Inc.
4200 Wilson Boulevard
Suite 800
Arlington, VA 22203-1838
Telephone: 1-800-955-5100
www.dr.bbb.org/goauto
This program is available in all
50 states and the District of
Columbia. Eligibility is limited by
vehicle age, mileage, and other
factors. General Motors reserves
the right to change eligibility
limitations and/or discontinue its
participation in this program.

Black plate (4,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
13-4 Customer Information
Customer Assistance
Procedure
Owner satisfaction and goodwill are
very important to your dealer and
General Motors.
Normally, any problem with the
transaction, sale, or usage of the
vehicle must be handled by your
dealer sales or service departments.
However, we recognize that
despite the good intentions of all
parties involved, sometimes a
misunderstanding may occur.
If you have a problem that has not
been satisfactorily handled through
the normal means, we suggest the
following steps:
STEP ONE
Explain your case to your dealer
service agent, service manager,
dealer sales agent, or sales
manager, depending on your case.
Make sure that they have all
necessary information. They are
interested in your continual
satisfaction.STEP TWO
If you are not satisfied, please
contact the general manager or your
dealership owner to ask for their
help. If they are not able to resolve
your case, ask them to contact the
right people at General Motors for
support, if needed.
STEP THREE
If your case is not resolved in a
reasonable amount of time by your
dealer, please call the General
Motors Customer Assistance
Center (CAC) and provide the
following information:
.Name
.Address
.Phone number
.Model year
.Brand
.Vehicle Identification
Number (VIN)
.Mileage
.Delivery date
.Description of the problem
.Dealership name
.Dealership address
See Customer Assistance Offices
(U.S. and Canada) on page 13‑4 or
Customer Assistance Offices
(Mexico) on page 13‑5.
Customer Assistance
Offices (U.S. and Canada)
GMC encourages customers to call
the toll-free number for assistance.
However, if a customer wishes to
write or e-mail GMC, the letter
should be addressed to:
United States
GMC Customer Assistance Center
P.O. Box 33172
Detroit, MI 48232-5172
www.GMC.com
1-800-GMC-8782 (1-800-462-8782)
1-800-462-8583 (For Text
Telephone Devices (TTYs))
Roadside Assistance:
1-888-881-3302

Black plate (9,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Customer Information 13-9
Services Specific to
Canadian‐Purchased Vehicles
.Fuel Delivery:Reimbursement
is approximately $5 Canadian.
Diesel fuel delivery may be
restricted. Propane and other
fuels are not provided through
this service.
.Lock-Out Service: Vehicle
registration is required.
.Trip Routing Service: Limit of
six requests per year.
.Trip Interruption Benefits
and Assistance: Must be over
250 kilometres from where
your trip was started to
qualify. General Motors of
Canada Limited requires
pre-authorization, original
detailed receipts, and a copy
of the repair orders. Once
authorization has been received,
the Roadside Assistance advisor
will help to make arrangements
and explain how to receive
payment.
.Alternative Service: If
assistance cannot be provided
right away, the Roadside
Assistance advisor may
give permission to get local
emergency road service. You will
receive payment, up to $100,
after sending the original
receipt to Roadside Assistance.
Mechanical failures may be
covered, however any cost for
parts and labor for repairs not
covered by the warranty are the
owner responsibility.
Roadside Assistance
Program (Mexico)
As a new owner, your vehicle is
automatically enrolled in the
Roadside Assistance program. The
services are available at no cost
under the terms and conditions
of the program. The Roadside
Assistance program is not part
of, or included, in the coverage
provided by the new vehicle limited
warranty. Roadside Assistance provides
assistance to the driver and
passengers while driving the
vehicle within your city of residence
or on any passable road in Mexico,
the United States, and Canada.
Services are subject to the
limitations described in the following
pages. Program coverage varies by
country.
Roadside Assistance is available
24 hours a day, 365 days of
the year.
This program expires two years
from the date of the invoice for
the vehicle, regardless of vehicle
mileage and changes in vehicle
ownership.
For more information about the
renewal of this program at the
end of its term, contact the GMC
Customer Assistance Center at
01-800-466-0801.

Black plate (14,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
13-14 Customer Information
Requirements vary and may
include minimum age requirements,
insurance coverage, credit card,
etc. You are responsible for fuel
usage charges and may also be
responsible for taxes, levies, usage
fees, excessive mileage, or rental
usage beyond the completion of the
repair.
It may not be possible to provide a
like vehicle as a courtesy rental.
Additional Program
Information
All program options, such as shuttle
service, may not be available at
every dealer. Please contact your
dealer for specific information
about availability. All Courtesy
Transportation arrangements will be
administered by appropriate dealer
personnel.
General Motors reserves the right
to unilaterally modify, change,
or discontinue Courtesy
Transportation at any time and to
resolve all questions of claimeligibility pursuant to the terms and
conditions described herein at its
sole discretion.
Collision Damage Repair
(U.S. and Canada)
If the vehicle is involved in a
collision and it is damaged, have
the damage repaired by a qualified
technician using the proper
equipment and quality replacement
parts. Poorly performed collision
repairs diminish the vehicle resale
value, and safety performance can
be compromised in subsequent
collisions.
Collision Parts
Genuine GM Collision parts are new
parts made with the same materials
and construction methods as the
parts with which the vehicle was
originally built. Genuine GM
Collision parts are the best choice to
ensure that the vehicle's designed
appearance, durability, and safety
are preserved. The use of Genuine
GM parts can help maintain the GM
New Vehicle Limited Warranty.
Recycled original equipment parts
may also be used for repair. These
parts are typically removed from
vehicles that were total losses in
prior crashes. In most cases, the
parts being recycled are from
undamaged sections of the vehicle.
A recycled original equipment GM
part may be an acceptable choice
to maintain the vehicle's originally
designed appearance and safety
performance; however, the history of
these parts is not known. Such parts
are not covered by the GM New
Vehicle Limited Warranty, and any
related failures are not covered by
that warranty.
Aftermarket collision parts are also
available. These are made by
companies other than GM and may
not have been tested for the vehicle.
As a result, these parts may fit
poorly, exhibit premature durability/
corrosion problems, and may not
perform properly in subsequent